Hsien Sun is a professional conical nuts (for sleeve anchor) manufacturer in Taiwan with over 30 years experience and its certified with a ISO9001 certification. Hsien Sun is very confident of supplying the best quality, most satisfactory products and services to customers, providing a wide range of nuts including conical nuts of sleeve anchor , anchors, sleeve anchor, bicycle nuts, autoparts nuts, weld nuts, special nuts, and various kinds of nuts. We hope you can inquire us with some product details directly to us.